four_fingerprint #

Contactless slap fingerprint capture for Flutter — 4-4-2 sequencing, minutiae extraction, and matching via phone camera.

Installation #

dependencies:
  four_fingerprint: ^2.0.0

Run flutter pub get.

Usage #

import 'package:four_fingerprint/four_fingerprint.dart';

await FourFingerprint.instance.initialize();

final controller = FpCaptureController();
await controller.initialize();

// Start 4-4-2 capture
controller.startCapture();
cam.startImageStream((image) async {
  await controller.processFrame(image);
});

// Save enrollment
final enrollment = controller.buildEnrollment('user_001');
await FpSecureStorage().storeEnrollment(enrollment!);

Screenshots #

API #

Platform support #